Powertrain
generic / SAE
P034B
Crankshaft Position Sensor - Crankshaft Direction Incorrect
The crankshaft is rotating in the wrong direction relative to the expected reference — typically only seen on stop-start systems where the engine briefly counter-rotates after shutdown.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number3 / 4B
Possible causes
- Stop-start residual reverse rotation high
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 200–1200 €
- Estimated time: 1–3 h
- Component: crankshaft position sensor
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012